322 
PROCEEDINGS OF THE NATIONAL MUSEUM. 
with that of sides of neck; breast maroon like the cervix, and shading 
posteriori}' into a more reddish shade; crissum shining green; lining 
of wing chestnut. 
The following table of measurements expresses best the difference 
between the two races of this species: 
Name. 
Sex. 
Locality. 
Wing. 
Tall (Chord E„„„^prt 
Male 
....do 
British Guiana 
84 
82 
77 
78 
92 
88 
122 
108 
25 
Do 
do 
24.5 
Topaza pclla pnmprcpta ' . . . 
Do 
do 
do 
24.5 
do 
23 
1 Type. 
Frequent in the edges of the forests around the small Indian clearings, and we 
also observed a few of them along the forest-covered banks of the smaller rivers 
running into the Napo, but they were by no means common anywhere. Local name, 
" Urcu-Quinde." 
TOPAZA PYRA (Gould). 
Trochilus (Tojmza) pyra Gould, Proc. Zool. Soc. Lond., 1846, p. 85. 
Topazn pyra Gr.^v, Genera Birds I, 1848, p. 110. 
One adult male of this magniticent and decidedl}^ uncommon species, 
from Coca, on the Rio Napo, east Ecuador. 
This single specimen was shot at the mouth (if the Curarai, the largest tributary 
of the Napo. They are pro])ably even rarer than T. pella, and are, I believe, not 
found on the upper waters of the Napo. 
OREOTROCHILUS CHIMBORAZO (Delattre and Bourcier). 
Trochilus chbnborazo Dklattke and Bourcier, Rev. Zool., 1846, p. 305. 
Oreotrochihis clumhorazo Gould, Proc. Zool. Soc. Lond., 1847, p. 10. 
Three adult males from the volcano of Chimborazo, west Ecuador. 
This species, I believe, is never met with north of Chimborazo. It occurs at alti- 
tudes of from 12,000 to 15,000 feet, though according to Hartert, to 17,000 feet, 
but this must be a mistake, as 16,000 feet is the snow line at the equator in 
Ecuador, and it is not likely to be found above that. Its local name is " Estrella 
de Chimborazo." 
OREOTROCHILUS JAMESONII Jardine. 
Oreoirochilus Jameson il Jardixe, Contr. Orn., 1849, p. 67. 
Oreoirochilus chimborazo jamesonii Hartert, Tierreich IX, 1900, p. 109. 
Thirty specimens, from Pichincha, Antisana, and Cotopaxi, Ecuador. 
There is no apparent difference between the birds from Antisana and 
Cotopaxi and those from Pichincha. There is in all this splendid 
series not the slightest indication of intergradation with 0. chimhorazo; 
therefore we do not follow Hartert^ in using a trinomial. 
Now very much rarer on Pichincha than formerly. They are in fine plumage in 
December, and during that month in 1898 we found them plentiful near the snow 
'Tierreich IX, 1900, p. 109. 
